US7900623B2 - Portable freestanding stove - Google Patents

Portable freestanding stove Download PDF

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Publication number
US7900623B2
US7900623B2 US11/994,304 US99430406A US7900623B2 US 7900623 B2 US7900623 B2 US 7900623B2 US 99430406 A US99430406 A US 99430406A US 7900623 B2 US7900623 B2 US 7900623B2
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United States
Prior art keywords
cone
combustion chamber
sheet metal
stove according
circumferential
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US11/994,304
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English (en)
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US20080202501A1 (en
Inventor
Wlodzimierz Sosnowski
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Individual
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • A47J37/07—Roasting devices for outdoor use; Barbecues
    • A47J37/0704—Roasting devices for outdoor use; Barbecues with horizontal fire box

Definitions

  • the invention refers to a portable freestanding stove designed to combust organic material pieces, especially wood pieces, the stove being mainly intended to prepare food products in outdoor open air.
  • the stove sidewall is composed of one upper inverted truncated cone of combustion chamber, the cone being made of sheet metal, and a circumferential sheet metal ring that surrounds the combustion chamber.
  • Second lower inverted truncated cone made of sheet metal to provide air draft is located below the upper cone.
  • Both truncated cones are rigidly positioned, one relative to the other, with axial gap in between, and fixed by means of circumferential sheet metal ring rigidly connected to them, the ring being positioned at the external circumference thereof.
  • Lower part of the upper cone connects to a grate, and under the grate a sheet metal ash pan is present.
  • Circumferential ring of the stove rests on a supporting structure.
  • the circumferential ring has a cylindrical shape and is coaxial with the upper inverted truncated cone of combustion chamber and the lower inverted truncated cone of air draft.
  • Sleeves with their axes parallel to the stove axis fixed to external circumference of the circumferential sheet metal ring are present.
  • the stove supporting structure preferably has three vertical pillars positioned, the pillars being within sleeves and the sleeves being uniformly arranged at the circumferential sheet metal ring.
  • the ash pan suspends on three flexible connectors, at least, suspension height thereof being adjustable.
  • Sleeves and pillars of the supporting structure have ports with cotters therein.
  • the ash pan suspends on chains, the chain links being fixed to hooks of the lower inverted truncated cone of air draft and the ash pan, respectively.
  • the chain links being fixed to hooks of the lower inverted truncated cone of air draft and the ash pan, respectively.
  • At the lower part of combustion chamber cone and the grate at least three struts with thickness equal to 0.01-0.1 diameter of the circumferential sheet metal ring, which surrounds the combustion chamber, are positioned.
  • At circumference of the upper part of combustion chamber cone there are ports to additionally supply air, the port diameter being 0.01-0.1 internal diameter of circumferential sheet metal ring of the combustion chamber. Ratio of port area total of the grate to cross section area of circumferential sheet metal ring of the combustion chamber is from 0.1 to 0.4.
  • Ratio of the smaller diameter of truncated cone of combustion chamber to diameter of the circumferential sheet metal ring of combustion chamber is from 0.5 to 0.8.
  • a grid is positioned on the upper edge of the circumferential ring.
  • Ratio of the internal ash pan diameter to the smaller diameter of the upper truncated cone is 1.16 or more.
  • Ratio of distances between the truncated cone internal walls of combustion chamber and the draft ensuring truncated cone to diameter of the circumferential sheet metal ring of the combustion chamber is from 0.02 to 0.09.
  • the grid deflects relative to the horizontal plane of combustion chamber.
  • the stove according to the invention provides for increased effectiveness of fuel material after-burning, smoke decrease and advantageous ash collection, also prevents scatter of not burned out pieces of flammable material, ensures increased material combustion and efficiency of energy use, promotes the environment protection.
  • the stove is easy to carry when taken apart, and while being assembled, it is also easy to match any vehicle transport means. Height adjustment option of the roasting spit on pillars, and also that of ash pan provide for convenient use of the stove.
  • the stove according to this invention has open combustion chamber 1 surrounded by sidewall 2 and grate 3 including ash pan 4 , and has supporting structure 5 .
  • Sidewall 2 includes upper inverted truncated sheet metal cone 6 of combustion chamber 1 and surrounding thereof circumferential vertical sheet metal ring 7 .
  • Second cone 8 i.e. lower inverted truncated sheet metal cone for stove air draft, is under upper cone 6 .
  • Cones 6 , 8 are rigidly fixed, one relative to the other, with axial gap h in between determined by means of circumferential ring 7 , also rigidly connected to cones 6 , 8 , while ring 7 is at external circumference of cones 6 , 8 .
  • Grate 3 connects to the lower part of upper cone 6 , sheet metal ash pan 4 being under it.
  • Circumferential vertical sheet metal ring 7 rests on supporting structure 5 .
  • Circumferential vertical sheet metal ring 7 has a cylindrical shape and is coaxial with upper inverted truncated sheet metal cone 6 of combustion chamber 1 and lower inverted truncated sheet metal cone 8 of stove air draft.
  • Sleeves 9 having their axes parallel to axis 10 of the stove connect to external circumference of circumferential ring 7 .
  • Supporting structure 5 of the stove has preferably three vertical pillars 11 positioned within sleeves 9 uniformly arranged at circumferential ring 7 .
  • Ash pan 4 suspends on three flexible connectors, at least, with adjustable suspension heights.
  • Ports 12 , 13 with cotters 14 inserted therein are in sleeves 9 and pillars 11 of supporting structure 5 .
  • Ash pan 4 suspends on chains 15 .
  • Chain links 16 are fixed to hooks 17 , 18 of lower inverted truncated sheet metal cone 8 of stove draft and ash pan 4 , respectively.
  • the thickness g thereof complying with condition 0.01D ⁇ g ⁇ 0.1D, where D is internal diameter of circumferential ring 7 of combustion chamber 1 and g is thickness of strut 19 .
  • Ratio of smaller diameter D gs of upper cone 6 of combustion chamber 1 to diameter D of circumferential ring 7 of the stove shall comply with condition
  • Grid 21 is deflectable relative to horizontal axis 22 .
  • Air for the combustion process of flammable material on the grate 3 comes through ports f of grate 3 .
  • Combustion gas is additionally subjected to after-burning downward by means of air supplied to combustion chamber 1 through additional air supplying ports 20 .
  • the air inlet height difference, from air inlet under the bottom of cones 6 , 8 of combustion chamber 1 and the air draft inlet, also the inlet of additional air supplying ports 20 provides a strong air flow rate and high rate of additional after-burning of combustion gas, the gas rising upwards, which increases temperature of the stove and decreases exhaust smoke thereof.
  • combustion chamber 1 By means of cotters 14 and many ports 13 in pillars 11 and sleeves 9 , the required height of combustion chamber 1 can easily be adjusted. By rotating pillars 11 through 180° a compact spacing thereof can be obtained, which is suitable in case of tight surroundings, or also alternatively it can be expanded so as to provide a better stove stability. Due to chains 15 and hooks 17 , 18 to position ash pan 4 , height adjustment thereof is possible.
  • the combustion chamber 1 surrounding additional wall and use of lower cone 8 decrease outside heat radiation losses of the stove and provide for better safety of use as well as improve the stove efficiency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Solid-Fuel Combustion (AREA)
  • Incineration Of Waste (AREA)
US11/994,304 2005-06-29 2006-06-26 Portable freestanding stove Active 2028-06-05 US7900623B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PL375965A PL203014B1 (pl) 2005-06-29 2005-06-29 Palenisko przenośne wolnostojące
PLPL-375965 2005-06-29
PL375965 2005-06-29
PCT/PL2006/000043 WO2007001196A1 (en) 2005-06-29 2006-06-26 Portable freestanding stove

Publications (2)

Publication Number Publication Date
US20080202501A1 US20080202501A1 (en) 2008-08-28
US7900623B2 true US7900623B2 (en) 2011-03-08

Family

ID=37205078

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/994,304 Active 2028-06-05 US7900623B2 (en) 2005-06-29 2006-06-26 Portable freestanding stove

Country Status (5)

Country Link
US (1) US7900623B2 (pl)
EP (1) EP1895881B1 (pl)
CA (1) CA2619465A1 (pl)
PL (1) PL203014B1 (pl)
WO (1) WO2007001196A1 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8479720B1 (en) 2008-10-16 2013-07-09 Oscar Enrique Figueroa Heating device and method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573988A (en) 1949-04-22 1951-11-06 Saltzberg Jack Rotary fire-bowl barbecue stove
US5086752A (en) * 1990-09-28 1992-02-11 Pyromid, Inc. Outdoor cooking unit with a pedestal stand
FR2775885A1 (fr) 1998-03-11 1999-09-17 Gilbert Lange Appareil de cuisson du type barbecue
DE20022220U1 (de) 2000-06-08 2001-05-23 Müller, Harald, 99897 Tambach-Dietharz Bratwurstrost mit Einsatz
US20020185122A1 (en) 2001-06-12 2002-12-12 Uniflame Corporation Portable outdoor fireplace
US20030094169A1 (en) * 2001-11-20 2003-05-22 Alden J. Michael Anthony Cooking device
US6868849B1 (en) 2003-08-07 2005-03-22 Adjustable campfire tripod
US20060225724A1 (en) * 2005-04-06 2006-10-12 Turner Kevin M Solid-fueled cooking or heating device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573988A (en) 1949-04-22 1951-11-06 Saltzberg Jack Rotary fire-bowl barbecue stove
US5086752A (en) * 1990-09-28 1992-02-11 Pyromid, Inc. Outdoor cooking unit with a pedestal stand
FR2775885A1 (fr) 1998-03-11 1999-09-17 Gilbert Lange Appareil de cuisson du type barbecue
DE20022220U1 (de) 2000-06-08 2001-05-23 Müller, Harald, 99897 Tambach-Dietharz Bratwurstrost mit Einsatz
US20020185122A1 (en) 2001-06-12 2002-12-12 Uniflame Corporation Portable outdoor fireplace
US20030094169A1 (en) * 2001-11-20 2003-05-22 Alden J. Michael Anthony Cooking device
US6868849B1 (en) 2003-08-07 2005-03-22 Adjustable campfire tripod
US20060225724A1 (en) * 2005-04-06 2006-10-12 Turner Kevin M Solid-fueled cooking or heating device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
International Search Report of PCT/PL2006/000043, date of mailing Nov. 21, 2006.

Also Published As

Publication number Publication date
PL375965A1 (pl) 2007-01-08
CA2619465A1 (en) 2007-01-04
WO2007001196A1 (en) 2007-01-04
WO2007001196B1 (en) 2007-03-01
EP1895881A1 (en) 2008-03-12
US20080202501A1 (en) 2008-08-28
EP1895881B1 (en) 2017-01-25
PL203014B1 (pl) 2009-08-31

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